앉은 자세에서 등뼈의 척주뒤굽음 각도가 가로막 움직임 및 폐활량에 미치는 영향

Abstract

The purpose of this study was to establish the effects of different thoracic kyphosis angles in sitting position on diaphragm movement and vital capacity. Ten healthy subjects were recruited for this study. Subjects performed four thoracic kyphosis angles-straight sitting positions against the wall(Condition A), sitting position with thoracic kyphosis angle of 30°(Condition B), sitting position with thoracic kyphosis angle of 40°(Condition C), sitting position with thoracic kyphosis angle of 50°(Condition D). Diaphragm movement was measured by M-mode ultrasound and vital capacity was measured by digital spirometer. A one-way repeated-measures analysis of variance was used to determine the statistical significance of the diaphragm movement and vital capacity. Diaphragm movement was significant difference between all positions and it was decreased as thoracic kyphosis angle increased. There was no significant difference in vital capacity. The results of this study suggest that increased thoracic kyphosis angle in sitting position can be having an adverse effect on patients with reduced vital capacity due to decreased diaphragm movement.